Boron Accelerates Cultured Osteoblastic Cell Activity through Calcium Flux
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- 作者：Mark Luigi Fabian Capati ; Ayako Nakazono…
- 关键词：Boron ; Odontoblast ; Cell proliferetion ; Differentiation ; Ca2+ flux
- 刊名：Biological Trace Element Research
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：174
- 期：2
- 页码：300-308
- 全文大小：1,718 KB
- 刊物主题：Biochemistry, general; Biotechnology; Nutrition; Oncology;
- 出版者：Springer US
- ISSN：1559-0720
- 卷排序：174
文摘
A low concentration of boron (B) accelerates the proliferation and differentiation of mammalian osteoblasts. The aim of this study was to investigate the effects of 0.1 mM of B on the membrane function of osteoblastic cells in vitro. Genes involved in cell activity were investigated using gene expression microarray analyses. The Ca2+ influx and efflux were evaluated to demonstrate the activation of L-type Ca2+ channel for the Ca2+ influx, and that of Na+/K+-ATPase for the Ca2+ efflux. A real-time PCR analysis revealed that the messenger RNA (mRNA) expression of four mineralization-related genes was clearly increased after 3 days of culture with a B-supplemented culture medium. Using microarray analyses, five genes involved in cell proliferation and differentiation were upregulated compared to the control group. Regarding the Ca2+ influx, in the nifedipine-pretreated group, the relative fluorescence intensity for 1 min after adding B solution did not increase compared with that for 1 min before addition. In the control group, the relative fluorescence intensity was significantly increased compared with the experimental group (P < 0.05). Regarding the Ca2+ efflux, in the experimental group cultured in 0.1 mM of B-supplemented medium, the relative fluorescence intensity for 10 min after ouabain treatment revealed a significantly lower slope value compared with the control group (P < 0.01). This is the first study to demonstrate the acceleration of Ca2+ flux by B supplementation in osteoblastic cells. Cell membrane stability is related to the mechanism by which a very low concentration of B promotes the proliferation and differentiation of mammalian osteoblastic cells in vitro.